Portable memory storage device



FIG. 1 is a perspective view of the portable memory storage device showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken line showings are included for the purpose of illustrating portions of the portable memory storage device and form no part of the claimed design. 

CLAIM The ornamental design for portable memory storage device, as shown and described. 